Gauge



Jan. l, 1954 J. B. ATTIG 2,666,265

GAUGE Filed Aug. 18, 1949 2 Sheets-Sheet l INIIIIIH Filed Aug. 18, 1949 Jan.19, 1954 amm- 2,666,265

GAUGE .2 sheets-sheet 2 Patented jan. 1.9,

UNITED STATES PATENT OFFICE GAUGE John B. Attig, Bridgeport,.Conn. Application August 1s, 1949, serial No. 110,961 s claims. (ol. 33-169) This invention relates to gages, and particularly toa new and improved scribingv attachment for a lverniei` heighty gage.

Prior-known gages of this sort include a standard, reversible scribing element having two parallel surfaces joined by an inclined surface forming a scribing edge. This standard element cooper ates with Ythe scale ofthe gage to give a direct reading from a datum, or layout table, on which it and the work to bemarked or measured rests only when employed in one of its positions of use. The standard scribing element, when used with its longest parallel surface facing downwardly,

effects a direct reading from datum, but is useful only when there is no part of the work directly above the line to be scribed within .a distance equal to the thickness of the element which would interfere with the element. W'hen such is the case, the standard element must be reversed and this results in an erroneous reading from datum on the scale, which verror must be taken into consideration each time such a measurement is made.

The principal object of this invention is to provide a scribing means that can be used with standard Vernier height gages and still give a direct reading from datum under all conditions of use; the provision of such a scribing means in which a line may be scribed, or a measurement made on work, regardless of the presence of interfering portions of the work, and still in every case give a direct reading on the scale of the gage; the provision of a pairrof cooperating elements, the combined thickness 'of the Shanks of which equals that of the standard scribing element commonly employed with height gages, and which pair of elements is so designed that its use with a standard height gage gives direct readings from datum in all positions of use; and the provision of a pair of scribing elements which provides a scribing edge at the same elevation regardless of the element employed. e

The above, as well as other objects and novel features of the invention will become apparent from ythe following specification and accompanying drawings, in which:

Figure 1 is an elevational view of a Vernier height gage to which the principles of the invention have been applied;

Fig. 2 is a view of the pair of scribing elements to which the principles of the invention have been applied;

Fig. 3 is a view of the scribing elements in one position of use;

Fig. 4 is a view of the scribing elements in another position of use; and

Fig. 5 is a View of a standard scribing element in current use.

Referring to Fig. l, the principles of the invention are shown as applied to a standard Vernier height gage including a base Iii adapted to be placed upon a datum surface, or work layout table. A standardl II is rigidly attached to base l!) at right angles thereto.

A scale I2 is provided along the one edge of the standard I I for a purpose to be described. An arm I3 having a saddle portion it is slidingly mounted on standard II and is adapted to be secured thereto at any desired position by a screw I5. A Vernier slideA i6 is attached to standard li above saddle I4 and is connected to the latter through the usual Vernier screw Il. It is adapted to be secured to the standard II by a screw I8. With screw I5 loose, saddle i4 can be adjusted very accurately by rotating nut I9 in the usual manner. A Vernier scale is attached to the saddle I4 in cooperating position with the scale I2.

With the arm I3 in its lowest position, the 0 Y of the Vernier scale 2i) will correspond to a reading of 1.000 inch on the scale I2. The thickness of arm I3, plus the thickness of base I0 equals one inch. Accordingly, with arm I3 in its lowest position and the standard element of Fig. 5 attached to arm I3 by a saddle clamp 2|, with its longest parallel side d-own as shown in Fig. 5, the scribing edge of the standard element is 1.000 inch above datum. However, the standard element is not useful in this position to scribe or measure a work piece arranged as shown in Fig. 4, in which case the standard element must be reversed, vmaking the actual elevation 1/2 inch more than in the previous case, so that a 1/g-inch error is introduced into the reading of scale iZ.

Referring to Fig. 2, a pair of cooperating scribing elements 22 and 23 is shown. These elements are provided with shanks 24, 25 having the same thickness and the combined dimensions of which exactly equal 1/ inch-that of the standard element of Fig. 5. The surfaces 26 Vand 21 of the elements 22, 23 are off-set an amount such that when in their assembled relation and clamped to arm I3 by saddle clamp 2i, the mating surfaces 26, 2`I are coextensive with the top surface of arm I3. Each surface 26, 2'! may be provided with an insert at its cutting end of a hard metal alloy such as tungsten carbide or its equivalent. Accordingly, with arm I3 in its lowest position, the scribing edges of elements 22 and 23 will be 1.000 inch above datum-the direct reading of scale I2.

Referring to Fig. 3, it is obvious that work 28 having a portion 29 directly beneath the elevation to be scribed or measured presents no problem since element 23 is retracted and element 22 employed. Also, as shown in Fig. 4, the reverse arrangement presents no problem since element 22 is retracted and element 23 employed. In every case, it is evident also that the elevation of the scribed line or measurement is directly read from scale l2,

Although, the varient. features Off tee. energies Vernier height gage Vhave been shovvn and described in detail to fully disclose one embodiment` of this invention, it will be evident that numercifsfJ changes may be made in such details, and certai features may be used without others, Withoutde; o

parting from the principles of theinienti'lor'fd" What is claimed is: mi l. In a height gage having a base, a N u having a scale thereon, and an arm` y"li'i'igly" mounted on said standard, the combination vvith Sa'd'ln' Of Sbg'TaIlS `ldalpt'd t' 'Dl'dce a line, or measurement, on Work as'adirectreading-freni datum'o'nsaidscale', said scribi''gnians including 'a pair 'of assembled? scribin'g elements having fs'cri'bing' 'edgesflying'i'ii a common plane and shank portions 1for'sa'i'd telemen't'sfthe outer surface rof""one'f ftvhich, when' said elements are in assembled relation, lies 'in"said"co minon plane. 2."Scribir1g' means for'alieight gage comprising a pair fof mating 'scrbing elements adapted "when 'combined to provide a scribing'edge 'lying in' a common plane; and'f'sh'ank portions' for 'said ele# ments', the fouter surface" Y'ofi one' of which, when s'aid elements lafre'iri `asseiribled4` relation", lies in said common plane.

3.' 'In a height g'age having a base, a standard having a scale Ythereon,"'and an"` arm"I slidingly mountedon 'said Ystai'idard,""said "arr'rha'vin'g" a surface bearing a' directrelationvvithV a'dat'm, the combination with said ariiioa pair of mating scribing elements adapted' When' combined to provide a paii` of scribing edges in the sameuplane, and shank portions'for said elem'ritsffthe Iouter surface 'o'f E'"on'e" o'f 'Whiclnl Wher'said elementsE are in assembled 'i-e1 ajtioii,` ues in *said piane and-"is adapted to be clamped in 'contact with said iarm along' its "surface tli'ajtxbear'sfa definite' relation to datum."

4; Scribing means for height gages comprisinga pair ofm'atirig elements 'adapted to bcla'rnpd tethe'arm of a gage'ea'ch of said eiemeiitshaviiig ascribingedge lying within thefsameplanaone of saidimatingielements'having' 'a recessed shank portion' andthe oth'er'havingian "olf-'set'v'shank portion such thatwhen'fsaid elements are as*- sembled the outersur'face of one vof saidshanks lies in'the plane ofthe scrbingfedges.

5.` In a height gage, 'a base; astandard; an arm slidably mounted on said `standard;having aspportingsurface on rwhich scribin'g or `measuring meansis ladaptedto beclamped;'"a scale located Orl Said, Standardso that the, supporting surface ofN s aidarxnV cooperates, withY said` scale tol 'give a diretreadingfrom a datum on Which'saidzbase is, mounted; a pairiof opposed,matinaeiements hariaeisribner.meesurinemeans lyinawiihin a common plane; and shanks for said elements. the outer surface of one of which, When said elements are in assembled relation, lies in said common plane and is adapted to be clamped to the supporting surface of said arm.

6. In a height gage, a base; a standard; an arm slidably mounted on said standard having a supporting surface on which scribing or measuring means1 is adapted to begclamped; a scale located on'saidstandard'sp that t esupportinglsurface of said arm cooperates With'said scale to give a direct reading from a datum on which said base is mounted; and a pair of mating scribing elements adapted to be moved relatively to each other and to be clamped to the supporting surface of said arm""andadapted when assembled to provide two scribing edges the same plane, one of said elementshaving a 'recessed shank portion and the oth'er'ha'ving an off-set.r shank portion such that when assembled, the outer surface of one of said Shanks liesi'n the p lane ofthescribing edges.

'7.A vIn combination`,'a standard; a vertically slid,- able arm on said standard; a clamping sleeve on s'aid arm; and a pair ofupperandlovver Scribers extending through "said clampingj sleeve, said scribers being in'contact with theirjfacing sidesin sliding engagement,`said scribers terminatingat one end inscratch points,'said scribe'rs b'eingar.- ranged for longitudinal, adjustment relative to each 'other and to the 'clamping sleevewherein the point of one ofthe scribers extends outwardly beyond'the point ofv the other scriberand said other scrib'er serves as'a slideyblocl;` and,le,v.eller for said one scrber.

"8. In combination, a standard; a vertically slid.- able arm 'onsai'd'standard;, a clamping sleeve on said ar'm'; anda' pair'of upper ahdlower scribers extending throi'igh said. Yclamping"sleeve, said scribers beingin' contact with. their facing sides in'slding' engagement, said. scribers' terminating at one 'end in scratch points, said scribers `being arrangedfor longitudinalA adjustment relative to each other and to the. clamping sleeve wherein the `point"'off'one' of..` the scribers extends out- Wardly beyondthe point ofthe other'scriber and said other' 'scriber serves `as a slide block and levellerfor saidone scriberf, the scratch points of the' scribers'being formed by.v bevels reaching to theouter ends'ofthe scribersfthe be'vels ofthe sc'ribers` 'being "reversedivithf respect to each other. f

` JOHN B. ATTIG.

Refeljeric'esA Cited y in 4 the` fle7 O f this patent,

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